EP 1257034 A3 20040414 - Power tools
Title (en)
Power tools
Title (de)
Kraftwerkzeuge
Title (fr)
Outils électriques
Publication
Application
Priority
- JP 2001139093 A 20010509
- JP 2001391797 A 20011225
- JP 2001288375 A 20010921
Abstract (en)
[origin: EP1257034A2] Battery-powered tools may include battery 1 or battery pack BP and a drive source (e.g., motor M) for generating power using current supplied from the battery. A switch 3 may electrically connect the battery to the drive source. A voltage detector may detect the output battery voltage of the battery. Further, a processor 60, 210, a comparator 5 or another similar device preferably determines when a difference between (1) a first battery voltage detected at a first predetermined time period after the switch is turned OFF and (2) a second battery voltage detected at a second predetermined time after the first predetermined time period exceeds a predetermined value. This information may be utilized to determine whether to warn an operator of the battery powered tool that further operation using the battery 1 or battery pack BP should be discontinued. <IMAGE>
IPC 1-7
IPC 8 full level
H02J 7/00 (2006.01)
CPC (source: EP US)
H02J 7/0031 (2013.01 - EP US)
Citation (search report)
- [X] US 6097172 A 20000801 - PODRAZHANSKY YURY M [US], et al
- [A] EP 0944153 A2 19990922 - MAKITA CORP [JP], et al
- [A] EP 0729211 A2 19960828 - COOPCOSTRUTTORI SOCIETA COOPER [IT]
- [A] EP 0911119 A2 19990428 - ATLAS COPCO TOOLS AB [SE]
- [A] US 4609089 A 19860902 - KOBAYASHI TAKASHI [JP], et al
- [A] US 4185701 A 19800129 - BOYS JOHN T [NZ]
- [A] EP 0099992 A2 19840208 - BOSCH GMBH ROBERT [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1257034 A2 20021113; EP 1257034 A3 20040414; EP 1257034 B1 20150701; EP 2256899 A1 20101201; EP 2256899 B1 20110803; US 2002175656 A1 20021128; US 2004263130 A1 20041230; US 6771043 B2 20040803; US 7109675 B2 20060919
DOCDB simple family (application)
EP 02010487 A 20020508; EP 10177338 A 20020508; US 14225102 A 20020508; US 88453104 A 20040702